import { existsSync, mkdirSync } from "node:fs";
import { dirname } from "node:path";
import Database from "better-sqlite3";
import { drizzle } from "drizzle-orm/better-sqlite3";
import * as schema from "./schema.js";

const databasePath = process.env.DATABASE_PATH ?? "./data/launchpad.db";

// Stellt sicher, dass das Verzeichnis für die SQLite-Datei existiert
// (relevant im Docker-Volume /data).
const dir = dirname(databasePath);
if (dir !== "." && !existsSync(dir)) {
  mkdirSync(dir, { recursive: true });
}

const sqlite = new Database(databasePath);
sqlite.pragma("journal_mode = WAL");
sqlite.pragma("foreign_keys = ON");

export const db = drizzle(sqlite, { schema });

/**
 * Legt die Tabellen an, falls sie noch nicht existieren.
 * Für den ersten Commit reicht ein einfaches "CREATE TABLE IF NOT EXISTS",
 * spätere Commits ersetzen dies durch echte Drizzle-Migrationen (drizzle-kit).
 */
export function ensureSchema(): void {
  sqlite.exec(`
    CREATE TABLE IF NOT EXISTS devices (
      id TEXT PRIMARY KEY,
      hostname TEXT NOT NULL,
      ip TEXT NOT NULL,
      mac TEXT,
      manufacturer TEXT,
      model TEXT,
      online INTEGER NOT NULL DEFAULT 0,
      source TEXT NOT NULL,
      last_scan TEXT,
      created_at TEXT NOT NULL,
      updated_at TEXT NOT NULL
    );

    CREATE TABLE IF NOT EXISTS services (
      id TEXT PRIMARY KEY,
      device_id TEXT NOT NULL REFERENCES devices(id) ON DELETE CASCADE,
      display_name TEXT NOT NULL,
      category TEXT,
      favorite INTEGER NOT NULL DEFAULT 0,
      "order" REAL NOT NULL DEFAULT 0,
      alias TEXT NOT NULL DEFAULT '[]',
      icon TEXT,
      hostname TEXT NOT NULL,
      url TEXT NOT NULL,
      https INTEGER NOT NULL DEFAULT 0,
      port INTEGER NOT NULL,
      favicon TEXT,
      description TEXT,
      created_at TEXT NOT NULL,
      updated_at TEXT NOT NULL
    );

    CREATE TABLE IF NOT EXISTS categories (
      id TEXT PRIMARY KEY,
      name TEXT NOT NULL,
      "order" REAL NOT NULL DEFAULT 0,
      created_at TEXT NOT NULL,
      updated_at TEXT NOT NULL
    );
  `);
}